LAST CHANCE FOR PEACE?

With all channels blocked in the Mideast, the best opportunity to salvage the peace accord may arrive Sunday in Washington, where a senior PLO adviser and foreign ministers of Israel, Jordan and Egypt are scheduled to meet with Secretary of State Warren Christopher. A senior U.S. official today toldTIME State Department correspondent J.F.O. McAllisterthat the only solution to the crisis may lie in boosting the economy of the Gaza Strip -- steering economic aid around Arafat's ineffective government and directly to his restive people.